Description
The Armstrong Furnace R104326-02 is a direct OEM replacement interlock switch designed to maintain safe, reliable operation of compatible Armstrong furnace systems. Interlock switches are critical safety components that prevent furnace operation unless all access panels and doors are properly secured, protecting both equipment and occupants from hazardous conditions.
Key Features
- Direct OEM replacement for Armstrong Furnace systems
- Ensures furnace will not operate with panels or doors improperly closed
- Helps maintain system safety and code compliance
- Engineered to OEM specifications for reliable fit and performance
- Supports proper system interlock sequencing
Application
- Compatible with select Armstrong Furnace models requiring the R104326-02 interlock switch
- Intended for use by qualified HVAC technicians during maintenance or repair
Why Replace Your Interlock Switch?
A faulty or worn interlock switch can cause nuisance shutdowns, prevent furnace ignition, or — in a worst-case scenario — allow the furnace to operate with an open access panel. Replacing a failed interlock switch with a genuine OEM part restores proper safety function and ensures the system performs as designed. Always verify compatibility with your specific Armstrong furnace model before installation.







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